Machine for drawing flax, wool, and other fibers for forming slivers or yarn



H.. T. EVES WING F March 22, 1938.

MACHINE FOR DRA LAX, vWOOL, AND OTHER FIBERS FOR FORMING SLIVERS QR YARNc. 23, 1955 '3 Sheets-Sheet 1 Filed De S5 R mw Wm 5 VM 2 EL G m C T M eR mmm A R RH D N March 22, 1938.

, AND OTHER OR YARN 3 Sheets-Sheet 2 MACHINE FOR FIBERS March 22, 1938.H. T. E 2,111,925

MACHINE FOR DRAWING F X, 0L AND OTHER 1 FIBERS FOR FORMING SLIVERS ORYARN Filed Dec. 23, 1935 3 Sheets-Sheet 3 INVENTOR Q7: {54%.

Patented Mar. 22, 1938 NITED STATES 2,111,925 MACHINE FOR DRAWING FLAX,WOOL, AND

OTHER FIBERS FOR OR YARN FORIVHNG SLIVERS Harold Trevor Eves, Belfast,Northern Ireland,

assignor to J.

& T. M. Greeves Limited, Belfast, Northern Ireland Application December23, 1935, Serial No.'55,761

In Great Britain 6 Claims.

The invention relates to gill frames for drawing flax, wool and otherlong staple fibers for forming slivers or yarn in which the gill barsare pushed forward along a controlled path as distinct from faller barscarried forward by screws.

The object of the invention is to provide means by which the path of thepush bars and the angle of the gill pins thereon relative to the planeof travel of the fibers may be so controlled that as the bars rise atthe back and descend at the front, the rising pins enter the sliverapproximately vertically or at right angles to the plane of the fibersand very close to the back roller and the descending pins leave thesliver approximately vertically or at right angles'to the plane of thesliver and approach very close to the nip of the front rollers beforedropping clear of the sliver and during the forward traverse of the barsthe distancebetween consecutive rows of pins, measured on the sliverline, is maintained constant or nearly so.

According to the invention the gill bars are each constructed withjournals to traverse a fixed path from back to front of the machine andwith two cranks having crank pins set at an angle relative to oneanother to traverse fixed cam paths to control the relative angle of thegill pins at difierent positions in the traverse of the gill bars.

The invention further comprises the setting of the gill pins in the gillbars upon the front or leading edge of the bar approximately tangentialto the bar.

The invention will be fully described with reference to the accompanyingdrawings:--

Fig. 1 is a longitudinal section of machine showing one arrangement ofpush bars and position of pins.

Fig. 2 is a front elevation of same. 7

Fig. 3 is a side elevation of path A which carries and guides the pushbars.

Fig. l is a side elevation of path B-which controls the crank which isin operation from the time the pins enter the sliver and travel alongthe reach until they are ready to descend.

Fig. 5- is a side elevation of path C which controls the crank which isin operation from when the bars start to descend at the nip and'untilthey enter the driving wheel.

Fig. 5a is a side elevation of the paths A, B and C assembled.

Fig. 6 is a plan of four push bars in place in wheel.

Fig. '7 is a detail of modification of'push bar January 22, 1935 showingnarrow collar which prevents end-wise travel of the push bar.

Fig. 8 is an end view of cranks shown in Figs. 2 and 6.

Fig. 9 is a side elevation of alternative shape of path A.

Fig. 10 is a side elevation of plate to support sliver in the nip, alsoguard or apron.

Fig. 10a is a front elevation of Fig. 10.

Fig. 10b is a plan of Fig. 10a.

Fig. 11 is showing various positions of gill pins in relation to thecross section bar.

Fig. 12 shows four methods of fixing gill pins to the push bar.

Fig. 12a is a plan of Fig. 12.

Fig. 13 is a plan of bars with a single crank at each end of push bar. 7

Fig. 13a is an end elevation of Fig. 13.

Fig. 14 is a plan of bars with at one end of each push bar.

Fig. 14a is an end elevation of Fig. 14.

Fig. 14b is a perspective view of double crank Fig-14.

Fig. 15 is an end elevation showing projections to keep bars spacedwider apart.

Fig. 15a is a plan of one of the bars shown in Fig. 15. The gill bars Aare each constructed with a journal 11 at each end to traverse a fixedpath A carried by the frame or carriage plate E of the machine extendingbetween the back roller F and the front roller G and leading with anincline down which the bars slide to a driving sprocket wheel W belowthe back roller F by which the bars A are raised and propelled one barpushing the adjacent one forward. A collar a on the bar fits between theteeth of the wheel W. There are two driving wheels W one at each side ofthe machine which engage and lift alternate bars.

The path A is preferably a casting secured to the frame by bolts at witha removable gate or block a to admit the ends of the gill bars A Thecollar 11 also serves to prevent end-wise movement of the gill bar.

The fixed path A for the gill bars A may be varied from that shown inFig. 3 to give a convex curvature to the straight portion of the reachand a similar curve to the return slope leading to the driving wheel W.This reduces the sharpness of the curve during the descent of the barsas shown in Fig. 9.

Each gill bar A is also constructed with or fitted with two cranks B Cset at an inclination to one another with crank pins a double crank band 0 carried" by the cranks B and C respectively. The crank pins 1) and0 while parallel to each other are disposed in different though parallelplanes and operate in cam paths in different vertical planes. The crankB is set at an angle of about from the line of the gill pin H and thecrank C at an angle of about 45 from the line of the same gill pin H andthe crank B (see Fig. 13a) or parallel with the same gill pin H and atan angle of about 90 from the crank B (see Figs. 8, 14a and 14b).

The crank webs b 0 need not be at right angles to each other as in anordinary crank thereby enabling the eccentricity of the crankpins b andc to be much greater than if right angle crank webs were used, theinclined cranks nesting into each other.

The two cranks B C are preferably constructed or forged at one end of.the gill bar A the crank C being carried by and extending beyond thecrank pin b of the crank B as shown in Figs. 2, 6, 8, and 141). Or thecrank B1 may be forged at one end of the gill bar A and the crank C atthe other end as shown in Figs. 13 and 13a.

Two fixed cam paths or grooves B and C are aflixed to the frame orcarriage plate E of the machine spaced apart in parallel planes. The pinb of the crank B traverses the cam path B and the pin 0 of the crank Ctraverses the cam path C.

The crank B enters the path or groove B as the bar is raised by thewheel W and continues therein as the bar A traverses to the front rollerG and causes the pins H to assume a vertical position and maintain aconstant distance between the row of pins H of adjacent bars A measuredon the sliver line.

The crank C transverses a fixed cam path or groove C afiixed to theframe or carriage plate E of the machine. The crank C enters the path orgroove 0 as the bar approaches the front roller G and begins to descendand as the crank B leaves the cam path B the crank C as it moves downthe cam path C maintains the descending pins H approximately verticaland at right angles to the plane of the sliver and causes them toapproach very close to the nip of the front roller G thereby reducingthe distance or space between the nip of the rollers and the point wherethe descending pins I-I leave the sliver. The crank C also controls theposition or angle of the pins H as the bars A descend the inclined partof the path A towards the driving sprocket wheel W.

The crank B and the cam path B cause the pins H to assume on theirforward traverse a position leaning slightly backward in the reach. Thisis useful for some types of sliver to prevent it rising. The cam path Bmay however be disposed relatively to the fixed path A of the bars Athat the pins H may travel forward at any desired angle to the line ofthe sliver.

The -path B also controls the pins H as they are rising maintaining themapproximately parallel as they enter the sliver. As the bars A begin todescend and the pins H to drop out of the sliver the crank B leaves thepath B and becomes inefiective and the crank C enters the path C andtakes control from this point onward.

As they descend the pins H are caused to lie closely against thefollowing bar thereby reducing the distance between the last pin H andthe nip of the front rollers G G to a minimum.

As shown in Figs. 2 and 6 the two cranks B and C re on one end of eachbar A but the bars are set in the machine with the cranks alternativelyto right and left to provide room for them requiring corresponding campaths B and C at both sides of the machine whereby one bar is controlledfrom one side and the adjacent bar from the other side of the machine.As shown in Figs. 13 and 13a the crank B is at one end of the bar A andthe crank C at the other end of the bar A With this construction of barthe cam path B will be mounted at one side of the machine and the campath C at the other side of the machine the cranks and cam pathsoperating as above described.

When the cranks B and C are at one end of the bar A the other end ismade so short as not to engage the teeth of a wheel W and discs D arekeyed on the driving shaft to support the ends of the bars as they areraised and moved forward by the driving wheel W at the other end.

The driving wheels W are set far back relative to the back supply rollerF, this ensures a vertical pinning of the sliver, the pins H of therising bars as controlled by the crank B and cam path B are caused topenetrate the sliver approximately vertically or at right angles ornearly at right angles to itself. This enables a very small pinningdraft to be employed. A brush K is mounted behind the wheel W or at anyconvenient place to clean the pins H.

A sliver plate or bridge piece S (see Figs. 10, 10a and 10b) is placedadjacent to the front roller G between the last pin H and the nip of therollers to prevent the sliver lapping round the pins H with an apron orshield S extending downwards around the roller. It is carried from theordinary floating conductor or some other part of the machine. It mayrun continuously from one side of the head to the other or it may be inseparate pieces for one, two or more slivers.

As shown in detail in Figs. 11 and 12 the gill gars A are constructedwith the pins H set thereon forward of the centre upon the front or theleading edge the pins being approximately tangential to the bar insteadof radial as is customary in this type of gill bar. Fig. 11 shows fourout of several different combinations of pin positions and Fig. 12 fourdifferent methods of securing the pins in position. Such as at e bydrilled holes, at f by notches or solder, at g by flat on bar and pinssoldered on and at h by a brass gill stock riveted to the bar. Toprevent the gill pins H on one bar from pushing against the bar in frontof it, projections 7' are soldered or otherwise fastened thereto atintervals between the bars, see Figs. 15 and 15a.

What I claim as my invention and desire to protect by Letters Patent is:

1. In a gill frame of the push bar type the combination of a pluralityof separate unconnected gill bars disposed in close proximity adjacentto one another, journals at each end of said bars, a fixed path at eachside of the machine along which the journals of the gill bars travel,rotary sprocket wheels with peripheral teeth disposed at the sides ofthe machine adjacent to the fixed paths by which the gill bars arecaused to traverse to the front and return to the back of the machine,two separate cam paths spaced apart but side by side in parallel planesat each side of the machine to engage crank pins carried by the bars anda double crank and crank pins on one end of each bar comprising an innercrank extending from the end of the gill bar and an outer crank carriedfrom and projecting beyond the pin of the inner crank, the cranks beingset at an angle one with the other, the pins of the cranks projectinginto the said cam paths respectively.

2. A gill frame of the push bar type having a plurality of separateunconnected gill bars disposed in close proximity adjacent to oneanother and provided each with journals upon which they are traversedand double cranks the crank pins of which lie in different but parallelplanes, constructed with fixed paths for the journals of the gill bars,and two discs mounted on the driving shaft adjacent to the drivingwheels to complete the fixed path at the back of the machine, two campaths inclined to the fixed paths set in planes parallel to one anotherand to the fixed paths with which the crank pins engage and along whichthey traverse whereby the angle of the gill pins in relation to theplane of the sliver is controlled as the gill bars traverse the machineand enter and leave the sliver.

3. In a gill frame as in claim 1 the combination with the fixed path andcam paths and the push gill bars of a sliver plate placed in the spacesbetween the descending pins and the nip of the drawing rollers and anapron guard to support the sliver and prevent fibres lapping the pins. 7

4. In a gill frame as in claim 1 the combination with the gill bars ofgill pins set thereon upon the front or leading edge the pins beingapproximately tangential to the bar.

5. In a gill frame as in claim 1 the combination with the gill bars ofgill pins set thereon upon the leading edge thereof and projections onthe bars to cause them to be more widely spaced when rising at the backslant and prevent the pins coming into contact with the bar in front.

6. A gill frame of the push bar type having a plurality of separateunconnected gill bars disposed in close proximity adjacent to oneanother and provided each with journals upon which they are traversedand each with double cranks the crank pins of which lie in different butparallel planes, constructed with fixed paths for the journals of thegill bars, and two discs mounted on the driving shaft adjacent to thedriving wheels to complete the fixed path at the back of the machine, acam path in the plane of each row of crank pins inclined to the fixedpath and each cam path set in a separate plane parallel to the fixedpaths and parallel toone another with which the crank pins respectivelyengage, and along which they traverse whereby the angle of the gill pinsin relation to the plane of the sliver is controlled as the gill barstraverse the machine and enter and leave the sliver.

HAROLD TREVOR EVES.

